Page 16 - Apprentice Manual_Neat

19. Dielectric strength of a generator winding is tested using:

a. Ammeter
b. Digital Multi-Meter
c. Insulation Resistance Meter
d. Torque wrench

20. The RPM of an AC generator, based on the number of windings, determines what parameter of that
generator?

a. Voltage output
b. Frequency
c. Current output
d. VARs

21. Which meter(s) would be used to measure phase sequencing?

a. Two watt meters
b. Phase rotation meter
c. Clamp-on ammeter
d. Two voltmeters

22. When testing a diode using a DVOM in the diode test mode, what would indicate a good diode?

a. Positive lead closest to the stripe, negative lead on the opposite end yields 0.5V.
b. Negative lead closest to the stripe, positive lead on the opposite end yields 0.5V.
c. Positive lead closest to the stripe, negative lead on the opposite end yields an open.
d. B and C must both be true or the test is incomplete.

23. In a 208 V system, using a clamp-on ammeter, you record A phase=57A, B phase=68A, and C
phase=59A. If the power factor is .92, calculate KW:

a. 20 KW
b. 13 KW
c. 60 KW
d. 5 KW

24. Which of the following is the color code of phase wiring on a 480V, 3 phase system for ABC
rotation?

a. Yellow, orange, brown
b. Red, white, blue
c. Black, red, blue
d. Brown, orange, yellow

EGSA Apprentice Certification Program Study Guide - Page 8